<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="" method="post">
    姓名 <input type="text" name="name"/>
    年龄 <input type="text" name="age"/>
    <input type="submit"/>
</form>
<p>{{ timer }}</p>
</body>
</html>